What is the nature of the DNA double helix? Are there other possible conformations of the double helix? List and discuss each.
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- What is the nature of the DNA double helix? Are there other possible conformations of the double helix? List and discuss each.
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Solved in 2 steps
- DNA contains many hydrogen bonds. Are hydrogen bonds stronger or weaker than covalent bonds? What are the consequences of this difference in strength?List the pyrimidine bases, the purine bases, and the base-pairing rules for DNA.State the properties of the WatsonCrick model of DNA in the following categories: a. number of polynucleotide chains b. polarity (running in same direction or opposite directions) c. bases on interior or exterior of molecule d. sugar/phosphate on interior or exterior of molecule e. which bases pair with which f. right- or left-handed helix
- How many possible nucleotide sequences are there for a stretch of DNA that is N nucleotides long, if it is (a) single- stranded or (b) double-stranded?How many different 8-mer sequences of DNA are there?What is the numeric relation between pyrimidine and purine bases in the DNA molecule? Is that relation valid in RNA molecules?
- What are the features that make the structure of the DNA stable? Explain why the DNA is the genetic material.Are there other possible conformations of the double helix?The base composition for one of the strands of a DNA double helix is 19% A, 34% C, 28% G, and 19% T. What is the percent base composition for the other strand of the DNA double helix?
